code: def encode_value_in_name(value, name, max_name_len=20):
      """Return `name` as fixed-length string, appending `value` as string.
  
      Form output from `name` if `value <= 1` else `name` + ``\x00`` +
      str(value).
  
      Return output as fixed length string length `max_name_len`, padded with
      ``\x00``.
  
      This function also verifies that the modified length of name is less than
      `max_name_len`.
  
      Parameters
      ----------
      value : int
          Integer value to encode.
      name : str
          Name to which we may append an ascii / latin-1 representation of
          `value`.
      max_name_len : int, optional
          Maximum length of byte string that output can have.
  
      Returns
      -------
      encoded_name : bytes
          Name maybe followed by ``\x00`` and ascii / latin-1 representation of
          `value`, padded with ``\x00`` bytes.
      """
      if len(name) > max_name_len:
          msg = f"Data information named '{name}' is too long (max {max_name_len} characters.)"
          raise ValueError(msg)
      encoded_name = name if value <= 1 else name + "\x00" + str(value)
      if len(encoded_name) > max_name_len:
          msg = (
              f"Data information named '{name}' is too long (need to be less"
              f" than {max_name_len - (len(str(value)) + 1)} characters "
              "when storing more than one value for a given data information."
          )
          raise ValueError(msg)
      # Fill to the end with zeros
      return encoded_name.ljust(max_name_len, "\x00").encode("latin1")
  
imports: import os
  import string
  import struct
  import warnings
  import numpy
  import nibabel
  from nibabel.openers import Opener
  from nibabel.orientations import aff2axcodes, axcodes2ornt
  from nibabel.volumeutils import endian_codes, native_code, swapped_code
  from .array_sequence import create_arraysequences_from_generator
  from .header import Field
  from .tractogram import LazyTractogram, Tractogram, TractogramItem
  from .tractogram_file import DataError, HeaderError, HeaderWarning, TractogramFile
  from .utils import peek_next
label_desc: Use image node_id 3 for calling a global function with example usage: encode_value_in_name(value, name, max_name_len) and returns: encoded_name